Vehicular thermal management system

A vehicular thermal management system includes an HVAC subsystem including a compressor, a heating-side expansion, an exterior heat exchanger, a cooling-side expansion valve, an evaporator, a distribution line allowing at least a portion of a refrigerant discharged from the exterior heat exchanger to be directed from the upstream side of the cooling-side expansion valve to the compressor, and a battery disposed on the distribution line. The system also includes a power electronics cooling subsystem including a power electronic component, a power electronic radiator, a power electronic pump disposed between the power electronic component and the power electronic radiator, and a bypass line allowing at least a portion of a power electronics coolant discharged from the power electronic component to bypass the power electronic radiator; and a heat exchanger including a first passage fluidly connected to the distribution line, and a second passage fluidly connected to the bypass line.